dimming and Color Mixing
https://b2b.hdl-automation.cz/en/downloads/products/data-sheets/knx/control-elements-hdl/granite-series-panels/data-sheet-m-ptl4-1_en_v1-0-1
https://b2b.hdl-automation.cz/en/downloads/products/data-sheets/knx/control-elements-hdl/granite-series-panels/data-sheet-m-ptl4-1_en_v1-0-1